content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
   * Other names may be trademarks of their respective owners.]
   *
   * -----------------
   * URLUtilities.java
   * -----------------
   * (C) Copyright 2007, 2008, by Object Refinery Limited.
   *
   * Original Author:  David Gilbert (for Object Refinery Limited);
   * Contributors:     -;
   *
   * Changes:
   * --------
   * 17-Apr-2007 : Version 1 (DG);
   *
   */
  
  package org.jfree.chart.urls;
  
  import java.lang.reflect.InvocationTargetException;
  import java.lang.reflect.Method;
  import java.net.URLEncoder;
  
  /**
   * General utility methods for URLs.
   *
   * @since 1.0.6
   */
  public class URLUtilities {
  
      /** Constant used by {@link #encode(String, String)}. */
      private static final Class[] STRING_ARGS_2 = new Class[] {String.class,
              String.class};
  
      /**
       * Calls <code>java.net.URLEncoder.encode(String, String)</code> via
       * reflection, if we are running on JRE 1.4 or later, otherwise reverts to
       * the deprecated <code>URLEncoder.encode(String)</code> method.
       *
       * @param s  the string to encode.
       * @param encoding  the encoding.
       *
       * @return The encoded string.
       *
       * @since 1.0.6
       */
      public static String encode(String s, String encoding) {
          Class c = URLEncoder.class;
          String result = null;
          try {
              Method m = c.getDeclaredMethod("encode", STRING_ARGS_2);
              try {
                  result = (String) m.invoke(null, new Object[] {s, encoding});
              }
              catch (InvocationTargetException e) {
                  e.printStackTrace();
              }
              catch (IllegalAccessException e) {
                  e.printStackTrace();
              }
          }
          catch (NoSuchMethodException e) {
              // we're running on JRE 1.3.1 so this is the best we have...
              result = URLEncoder.encode(s);
          }
          return result;
      }
  
  }
  